Version:            (using KDE KDE 3.5.0)
Installed from:    Fedora RPMs
OS:                Linux

I have a regular IMAP folder opened. "Thread Messages" is not selected, and as a consequence "Thread Messages also by Subject" is greyed out.

However, whilst it is greyed out, it is also selected - and messages _are_ being threaded, by subject.

Moreover, when I try to delete a whole "thread" (as displayed), kmail crashes. Every time, any thread.

Backtrace:

(no debugging symbols found)
Using host libthread_db library "/lib/libthread_db.so.1".
(no debugging symbols found)
`shared object read from target memory' has disappeared; keeping its symbols.
(no debugging symbols found)
(repeat)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread -1209141568 (LWP 3560)]
[New Thread -1245062224 (LWP 3564)]
[New Thread -1234572368 (LWP 3563)]
[New Thread -1224082512 (LWP 3562)]
[New Thread -1213592656 (LWP 3561)]
(no debugging symbols found)
(repeat)
(no debugging symbols found)
[KCrash handler]
#4  0x00000049 in ?? ()
#5  0x06fe8b9e in KMHeaders::msgRemoved () from /usr/lib/libkmailprivate.so
#6  0x07210372 in KMHeaders::qt_invoke () from /usr/lib/libkmailprivate.so
#7  0x0379aaf4 in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#8  0x06fa3b5f in KMFolder::msgRemoved () from /usr/lib/libkmailprivate.so
#9  0x06fef7be in KMFolder::qt_emit () from /usr/lib/libkmailprivate.so
#10 0x0379ab38 in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#11 0x06fa48a1 in FolderStorage::msgRemoved ()
   from /usr/lib/libkmailprivate.so
#12 0x071f3fb8 in FolderStorage::removeMsg () from /usr/lib/libkmailprivate.so
#13 0x071f4232 in KMFolderImap::removeMsg () from /usr/lib/libkmailprivate.so
#14 0x06f76664 in KMFolder::removeMsg () from /usr/lib/libkmailprivate.so
#15 0x070318e8 in KMMoveCommand::execute () from /usr/lib/libkmailprivate.so
#16 0x06fabb04 in KMCommand::slotPostTransfer ()
   from /usr/lib/libkmailprivate.so
#17 0x0702ebf3 in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#18 0x0702ee63 in KMMenuCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#19 0x0702eed8 in KMMoveCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#20 0x0379aaf4 in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#21 0x06fa7fb8 in KMCommand::messagesTransfered ()
   from /usr/lib/libkmailprivate.so
#22 0x0702e7a7 in KMCommand::transferSelectedMsgs ()
   from /usr/lib/libkmailprivate.so
#23 0x0702e9fe in KMCommand::slotStart () from /usr/lib/libkmailprivate.so
#24 0x0702ec05 in KMCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#25 0x0702ee63 in KMMenuCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#26 0x0702eed8 in KMMoveCommand::qt_invoke () from /usr/lib/libkmailprivate.so
#27 0x0379aaf4 in QObject::activate_signal ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#28 0x03b136d6 in QSignal::signal () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#29 0x037b7ff3 in QSignal::activate () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#30 0x037c08a7 in QSingleShotTimer::event ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#31 0x03735b6d in QApplication::internalNotify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#32 0x037364bc in QApplication::notify ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#33 0x0457a83d in KApplication::notify () from /usr/lib/libkdecore.so.4
#34 0x0372a439 in QEventLoop::activateTimers ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#35 0x036de7f4 in QEventLoop::processEvents ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#36 0x0374e1eb in QEventLoop::enterLoop ()
   from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#37 0x0374e0f6 in QEventLoop::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#38 0x03735539 in QApplication::exec () from /usr/lib/qt-3.3/lib/libqt-mt.so.3
#39 0x0805ab41 in ?? ()
#40 0x0070ed5f in __libc_start_main () from /lib/libc.so.6
#41 0x08058581 in ?? ()